Vornado Evap2 Humidifier
This unit certainly does the job of raising the humidity. I have a small home and have it in the largest room where it reliably raises the relative humidity 2-3points.
This unit does not have an automatic cut-off when it runs out of water. The blue-colored canister can be difficult to see even with the light. As a result, the unit continues to run when empty.
The only good thing about this is it dries out the wick. They are serious about emptying it every day. I left it for several days when it was damp and rainy and am now having to replace the wick which grew several varieties of mold in that time! So either leave it running when empty so the wick will dry, or be vigilant in emptying when not in use - you could be adding more than humidity back to your air!
January 21, 2013